Once you book, host will send the message that his building doesn’t all Airbnb and short term rental. There was the sign of No Airbnb and short term rental is illegal right in the lobby.
That’s the beginning of everything: we are not comfortable with the reservation, and when asked for the cancellation , it took us very long time.
Since host didn’t disclose it on the listing. We will help other guests so you don’t waste your time if you are not comfortable being illegal. If you do not mind, host has the way for you to sneak into the building by picking the key in the parking lot. The location is tight next to bts.